Question

A 5.0-m-long ladder leans against a wall at 4.0 m above a cement floor. The ladder is uniform and has mass m-15.0 kg. Assume the wall is frictionless, but the floor is not. When the ladder is in equilibrium, please find 1. how many forces apply to the ladder? 2. the two conditions for ladder in equilibrium (math expression)? 3. the force Fw that the wall exerts to the ladder 4. the force Fo that the floor exerts to the ladder 5. the force F that the floor exerts on the ladder 6. the coefficient of static friction of the floor 7. if the net force Fc is along the ladder? Why? 8. how big the coefficient of friction when Fc is along the 4.0 ng cs ladder. 9. what will happen if floor is frictionless but wall has friction, why? 10. what will happen if both floor and wall is frictionless, why? Please say a few words about the difficulties to you in this problem or in Chapter 8 or 9 (1 point ext
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